'Access token' and even 'user ID and password' can be confused with turnserver.conf credentials

[reivilibre]

@reivilibre aha, I see! I mistook "user id and password" and "access token" to be based on the nomenclature in turnserver.conf (i.e. the static-auth-secret and "user=username1:password1").

Originally posted by @rht in matrix-org/synapse#9135 (comment)

[rht]

For discoverability, there could be a hover link over the "Access Token" to a page/hover-text that tells how to get the access token (e.g. "(in Riot/Web, you can look at Settings → Help & About → Access token: >click to reveal>").

[richvdh]

A mode in which you specify the turn-server URL(s) and the shared secret might be useful anyway.